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Slide 1:

BLUETOOTH

INTRODUCTION :

Bluetooth is a high-speed, low-power microwave wireless link technology, designed to connect phones, laptops and other portable devices together
Operates at 2.4 GHz
The effective range: 32m(10feet)
Point to point connecting device
The Bluetooth specifications are developed and licensed by the bluetooth special interest group(SIG)
Average data transfer rate:1Mbps
known as the IEEE 802.15 standards INTRODUCTION

VERSION 2.0+EDR :

VERSION 2.0+EDR Announced by SIG in June 2004
Enhanced data rate of up to 3 Mbps
Enhances multiple connectivity-able to run many devices at a time
Lower power consumption
Further improved Bit Error Rate performance
Computers and laptops have been some of the 1st devices to use Bluetooth 2.0 + EDR
Three times faster transmission speed
EDR: Enhanced Data Rate

VERSION 2.1+EDR :

VERSION 2.1+EDR Adopted by the Bluetooth SIG on July 26, 2007
Improved Pairing
Enhanced Power Optimization
Provides more information during the inquiry procedure to allow better filtering of devices before connection (EIR)
Secure simple pairing (SSP) increases the strength of security

VERSION 3.0+HS :

Adopted by SIG in April 21,2009
Enhances high speed
Data speed upto 24Mbps
Enhanced Power Control
Compatible with low power battery devices
Faster connections
Uses 802.11 rodio technology consumes low power
Under research VERSION 3.0+HS

BLUETOOTH DONGLE :

BLUETOOTH DONGLE

BLUETOOTH HEADSET :

BLUETOOTH HEADSET

ADVANTAGES :

Low power
Integrated into small battery powered devices
USB Dongle can be attached to any portable devices to make it bluetooth enabled
Operates in radio frequency range 2.4GHz ADVANTAGES

DISADVANTAGES :

Data security
Low data transfer rate( 1 Mbps)
Suitable for transferring only small amount of data
If data increases consumes more Power DISADVANTAGES

What is WIFI? :

WIFI-Wireless fidelity(wireless local area network)
based on the IEEE 802.11 standards
. The 802.11b Wi-Fi technology operates in the 2.4 or 5 GHz range offering data speeds up to 11 megabits per second.
Single to multi point access
Covers upto 100 feet
computer's wireless adapter translates data into a radio signal and transmits it using an antenna. A wireless router receives the signal and decodes it. The router sends the information to the Internet using a physical, wired Ethernet connection What is WIFI?

FLAVOURS OF WIFI :

802.11a transmits at 5 GHz and can move up to 54 megabits of data per second. It uses OFDM(a more efficient coding technique that splits that radio signal into several sub-signals before they reach a receiver).Avoids interference
802.11b is the least expensive standard. Its cost made it popular, 802.11b transmits in the 2.4 GHz frequency band of the radio spectrum. It can handle up to 11 megabits of data per second, and it uses complementary code keying (CCK) modulation to improve speeds
.
802.11g transmits at 2.4 GHz like 802.11b, but it's a lot faster -- it can handle up to 54 megabits of data per second. 802.11g is faster because it uses the same OFDM coding as 802.11a. FLAVOURS OF WIFI

WIFI - ANTENNA :

WIFI - ANTENNA

ROOF MOUNTED ANTENNA :

ROOF MOUNTED ANTENNA

SPEED Vs MOBILITY OF WIFI :

SPEED Vs MOBILITY OF WIFI

ADVANTAGES :

Wi-Fi allows local area networks (LANs) to be deployed without wires for client devices
Wi-Fi is a global set of standards.
Unlike mobile phones, any standard Wi-Fi device will work anywhere in the world.
Economical ADVANTAGES

DISADVANTAGES :

WiFi uses the unlicensed 2.4GHz spectrum, which often crowded with other devices such as Bluetooth, microwave ovens, cordless phones, or video sender devices, and among many others
Power consumption is fairly high compared to some other standards, making the battery life and heat a concern to some users.
interference which causes the users devices to no longer function. DISADVANTAGES

Slide 35:

SPECTRUM ALLOCATION :

SPECTRUM ALLOCATION Works on both licenced and unlicenced frequencies
Access any frequency below 66GHz
Wimax forum licensed three frequency: 2.3GHz,2.5GHz and 3.5 GHz
Unlicensed frequency :5.4GHz is a approved profile
INDIA uses a mix frequencies of 2.5GHz and 3.3GHz

WIMAX- ANTENNA :

WIMAX- ANTENNA

ADVANTAGES :

Efficient bandwidth
Less interference
Operates in both licensed and unlicensed
frequencies
connections based on scheduling algorithm
High speed internet access
Would connect the remote areas without
cabling ADVANTAGES

DISADVANTAGE :

DISADVANTAGE Delivers less than 40 Mbps over 50 Km(30 miles)
Bit transfer gets reduced as distance increases
Performance could deteriorate if number of users in a single stage increase
Mobile wi -max uses lower gain antennas

QUERIES???? :

QUERIES????

THANK YOU :

THANK YOU

Slide 53:

Presented By
S.RUBIYA BEGAM
Third year
Dept Of ECE
Anna University
Tirucirapalli